TECH: How to fix any automotive flared fitting leak for 20 cents

We used the dead soft aluminum ones on some of the fuel fittings on some turbine engines I worked on, they are a life saver for sure.

 

We use them on the industrial jet engines and turbines we build. Ours are an aluminum and go on the oil supply and scavenge lines because a small leak of oil in the hot gas path works just like a torch and will cut through alloy engine and turbine air foils.

The FOD damage is costly, in the millions on most. I never thought of this for brake systems and other flared lines, its a great idea.

Cliff Ramsdell

 

When I was an eng. tech. in the aircraft industry we used the AN ones all the time on test equipment. They were called"crush cones". I don't remember who made them.

 

I used them many times in the Liguid Propane industry also , you could have charger $100.00 each for them many times , working outside at -10* tryin to stop a leak on a regulator control line.

 

Napa used to carry them, may still
have em' available.

 

I use a tiny dab of Teflon pipe thread sealer on the sealing area and on the threads of my fittings. This allows the sealing surfaces to “move” on their tapers more easily, there for making a better seal. Also on the threads, allowing them to give more clamping action due to reduced friction between the threads. Just my way, but have never had any trouble making a leak free connection on various types of fittings.

Bones

 

I've got a great little hydraulic shop about 10 minutes from my place. They have helped me out with braided fuel lines and fittings, and A/C lines and fittings, and other similar pieces for some of my OT vehicles. What I really like about the place is that they allow me to go back into the shop with them so I can "design" the piece on the spot.

If you're ever in a hurry to fix a leak and can't wait for an out of town order to be shipped, I'll bet these local shops have those copper crush washer/gaskets cash-n-carry, no waiting.

 

A great way to go. Used them at work on aircraft jet engines.

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